68477905 has 16 divisors (see below), whose sum is σ = 83772864. Its totient is φ = 53726400.

The previous prime is 68477897. The next prime is 68477939. The reversal of 68477905 is 50977486.

It is a happy number.

It is not a de Polignac number, because 68477905 - 2³ = 68477897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64630 + ... + 65680.

It is an arithmetic number, because the mean of its divisors is an integer number (5235804).

Almost surely, 2^68477905 is an apocalyptic number.

It is an amenable number.

68477905 is a deficient number, since it is larger than the sum of its proper divisors (15294959).

68477905 is a wasteful number, since it uses less digits than its factorization.

68477905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 68477905 is about 8275.1377632037. The cubic root of 68477905 is about 409.1194765759.

The spelling of 68477905 in words is "sixty-eight million, four hundred seventy-seven thousand, nine hundred five".